Etiella brevis, Liu & Li, 2014

Liu, Hong-Xia & Li, Hou-Hun, 2014, Taxonomic study of the genus Etiella Zeller (Lepidoptera: Pyralidae: Phycitinae) in China, Zoological Systematics 39 (1), pp. 149-153 : 150-151

Etiella brevis sp. nov. ( Figs 1–2 , 5, 8 )

Holotype ♂, China, Botanical Garden of Xiamen University (24º26'N, 118º06'E; alt. 85 m), Xiamen, Fujian Province, 17 September 2011, coll. Jin Zhang and Xiao-Fei Yang, genitalia slide No. LHX11027 . Paratypes 6♀♀, Mt. Tianzhu (24º06'N, 117º55'E; alt. 220 m), Xiamen, Fujian Province, 3–6 August 2011, coll. Jin Zhang and Zhi-Bo Wang, Jin Zhang and Bing-Bing Hu .

Description ( Figs 1–2 ). Wingspan 15–18 mm. Vertex in male yellowish brown, in female greyish brown. Male antennae with scape yellowish brown on dorsal surface, slivery white on ventral surface, length about 3 times of its width; flagellae greyish white on dorsal surface, yellowish brown on ventral surface, sinus with scales greyish black dorsally, silvery white ventrally; female antennae filiform, greyish white with brown rings. Labial palpi in male with first segment greyish white, second segment greyish brown, upturned obliquely, third segment grey, porrect, about 1/5 length of second; in female ( Fig. 2 ) with first segment white, second and third segments greyish white inside, yellowish brown outside, second segment curved, third segment about 2/5 length of second. Patagium greyish white mixed with brown scales; tegulae and thorax greyish white, deep brown basally. Forewing greyish black mixed with greyish white scales; subcostal streak obscure, greyish white mixed with greyish black; spot at basal 1/3 pale yellow, rectangular, scale ridge on its inner margin black, somewhat separated; fringe grey. Hindwing pale grey, costa, termen and veins brown; fringe grey. Legs white dorsally, blackish brown ventrally, tarsus with each segment white distally, inner spurs 1.8 times length of outer spurs.

Male genitalia ( Fig. 5 ). Uncus length about 1.3 times of its basal width, sparsely setose dorsally. Gnathos horn-shaped, about 5/8 length of uncus, slightly incurved. Valva narrowed basally, widened to middle, then again narrowed to apex, with long bristles; left costal process shorter than valva, its basal 2/3 wide, distal 1/3 apart from valva, narrowed to a distal spine; right costal process as long as valva, about 1.2 times length of left one, its basal half equal in width, distal half narrowing. Juxta U-shaped, lateral arms with distal 1/3 bulbously dilated, densely setose. Vinculum U-shaped, anterior margin slightly concave on right side. Aedeagus cylindrical, 1.7 times length of valva, with sclerotized wrinkles extending from basal 1/5 to middle, distal half with sclerotized granules; cornutus one, rod-like.

Female genitalia ( Fig. 8 ). Papillae anales triangular, length about 1.3 times of basal width, densely setose. Eighth abdominal segment length about 1.4 times of width. Apophyses posteriores 1.3 times length of apophyses anteriores. Ductus bursae about 1/4 length of corpus bursae, posterior 1/7 with transverse wrinkles, anterior part with longitudinal wringkles. Corpus bursae long bag-shaped, membranous, inner wall with small spines; signum at posterior half of corpus bursae, near appendix bursae, its posterior 1/5 with conical spines. Appendix bursae bag-like, arising from junction of ductus bursae and corpus bursae, about 1/2 length of corpus bursae; basal 1/3 with a rectangular plate, covered with microspines. Ductus seminalis from between posterior 1/4 of corpus bursae and middle, open widely; a triangular plate situated at junction of corpus bursae and ductus seminalis.

Diagnosis. This species is similar to E. grisea Hampson, 1903 , but can be distinguished from the latter by the right costal process nearly equal to length of valva, about 1.2 times length of the left costal process in the male genitalia; and the ductus seminalis not helical in the female genitalia. In E. grisea , the right costal process is about 1.6 times length of the valva and 2 times length of the left costal process, and the ductus seminalis is helical.

Distribution. China (Fujian).

Etymology. The specific name is derived from Latin brevis , meaning short, referring to the relatively shorter costal process.

Figures

Figs 1−4. Adults of Etiella spp. 1. E. brevis sp. nov., holotype, ♂. 2. Head of E. brevis sp. nov., paratype, ♀. 3. E. grisea Hampson, ♀. 4. E. walsinghamella Ragonot, ♂. Scale bars: 1, 3−4 = 2.0mm, 2 = 0.5mm.

Figs 5−9. Genitalia of Etiella spp. 5−7. Male. 8−9. Female. 5. Etiella brevis sp. nov., holotype, slide No. LHX11027. 6. E. grisea Hampson, slide No. LHX12338. 7. E. walsinghamella Ragonot, slide No. LHX12131. 8. E. brevis sp. nov., paratype, slide No. LHX12129. 9. E. grisea Hampson, slide No. LHX12339. Scale bars = 1.0mm.